I don't think it is possible to be self sufficient using wood as fuel. These days people expect the whole house to be heated, but when wood was the only fuel available, only the actual rooms in use would have been heated, wood was burnt on a bed of ashes (which makes for a steadier burn and heat. Going even further back in history, the dwelling only consisted of one room, this was the case even more recently in Holland (well into the 19th century). Remember that life was not very comfortable those days, it was really just an existence.You only have to look at the cast iron bedroom fireplaces in Victorian terraced houses to realise this. Open fireplaces these days are 22 to 24 inches, those bedroom fireplaces were 10 to 12 inches.
Whilst we have Calor central heating, I am experimenting with using a wood fire in the main room during the evening (or all day when very cold) other times we will be using a fan heater when a room is in use. This is due to the high cost of gas (from previous experience, it will cost £50 per week during bad weather), and our bungalow is very small by today's standards. Water heating is another problem, the biggest waste of fuel is keeping a cylinder full of hot water 24/7, I have an electrically heated shower and use this to supply hot water for the wash basin. I am looking to install an instant water heater in the kitchen. Although we have some insulation, it is below today's standard and cannot be upgraded. So the Government insulation scheme is of no use to us.